Pipe-bending apparatus.



RJL. DAVIS & a. c. MOYERS.

PIPE BENDI NG APPARATUS.

APPLICATION FILED FEB. 12, I915.

Patented Jan. 11, 1916.

2 SHEETS-SHEET 1.

4 VENTORS WITNESSES COLUMBIA PLANOORAPH CO.,WASHINOTON, D. c.

R. L. DAVIS & G. 0. MOYERS.

PIPE BENDING APPARATUS. APPLICATION FILED FEB. 12, 1915. I 1,167,983, Patented Jamll, 1916.

2 SHEETSSHEET 2.

J7 :EIE.5 v .1 I

7 f 7 .11 I ii! 1] 3 2 22 WITNESSES:

WW B) 2 COLUMBIA PLANOGRAPH co., WASHINGTON. D c.

N VENTORS mm 1 memes.

I FIRAY L. DAVIS lvin GUY, o. .MoYER-sor w EntINe,,,wEsT VIRGINIA.

. .To all whom it may concern:

- Be lt-ylHlOWILtllithWB, R-AY L. DAvIsand GUY QMoYnRs, citizens of the United States of -America, and residents ,of Wheeling,

.county of Ohio, and State ofVVest Virginia, have invented certain new and useful Im provements in Pipe-Bending Apparatus, of which thefollowing is a specification.

Tli isinvention relates broadly to pipe bending devices, and specifically to a ma- ;chine for producing bends inpipe.

-The primaryv object of the-invention is to provide a simple, strong and durable device or machine whereby bends of various forms mavbe readilyv formed in pipes, lead cables and the like.

A'further object is to provide a. machine of the character mentioned which; is selfcontained, portable andadapted to be, used without bolting down or otherwise attachingto awork-bench orfiXed support.

lVith these and other objects in View, the

invention residesin the features of con- Sill-116M011, arrangement of parts, and comb1-- nations of elements which will hereinafter be fully described, reference being had to theacompanying drawings, forming a part of this specification, 1n -wh1ch Figures 1 and 2 are elevations of opposite sides of. the machine; Figs. 3 and 4 are respectively rear and front elevations of the same; and Figs. 5 and 6 are sections taken --respectively.fon the lines ,56 and 6 6,

- designating characters distinguish like parts Fig. 2.

,Referring to said drawings, in which like throughout the several views-1 indicates the opposite upright side members ofv a frame which is preferably provided with seats or sockets 3 for thereception of diyergently inclined supporting legs 4. Fixed insaid side members 1 are the opposite ends ,of a. horizontally disposed shaft 5;,upon

. which, between-said members, a wheel, 6 is 4s rotatably mounted, said wheel having-a circumferentlal p1pe-rece1v1nggro0ve 6 provi ded therein. Attached to or formed in- "receiying groo ezfie, asisshown-im Figs 3.,

PIPE-BENDINQAPPARATUS.

Specification of Letters Patent.

Patented Jan. 11,

Application filed-February 12, 1 91 5. Serial No. 7,676.

Attached-to or formed integral with the wheel 6is a laterally disposedbearing block 8 having a bore. 9 therein, which, in the normal or initial working position. of the wheel, extends vertically through said block. dvlountedin said bore 9 is a stem or guide member-10 formed on a head-piece 11 which overlies and is vertically movable with respect to said block 8 and the adjacent porchannel 11 adapted to accommodate the adjacent face of the interposed pipe. Said head-piece.is mounted upon and has swivel.-

.like connectionwith an adjusting screw 13 which is. threaded vertically into the bearing block 8, as is clearly shown in Fig. 5.

I Loosely mounted upon the shaft 5' is an arm 14 constituted by an extension of one 0f the. parallel members of a yoke lat which has a portion, as astein 15, adapted for the reception of a rod or lever 16. Rotatably nrounted between the parallel members of said yoke is a wheel 17 having a circumfergcntialgroove 17 therein corresponding to the groove 6 in wheel 6. Said wheel 17 is supported I in a position adjacent to the periphery of said wheel 6 and is adapted to ride,during the bending operation, upon the pipe 12 held in the vise-like grip of the head-piece lland said wheel 6.

Formed on the periphery of the wheel 6 laterally of the groove 6 thereof is a pinrality of ratchet teeth 18 adapted to be engaged. by. a spring-held pawl 19 which is plvotally mounted at a suitable point, as on the frame 2. Said pawl serves to maintain the-wheel 6.against rotation when the lever 16 is drawn downward in the pipe-bending operation.

Provided in the plug-board 7 is a plurality of suitably arranged openings 20 adapted for receiving therein the stem portions ofremovable plugs 21 the bodies of -.which are circumferentially grooved, as shown in. Fig. 6, and over or about wh1ch a .pipe may be turned by hand for producing a ,great variety .of short or abrupt bends,

gsaid plugs being first disposed in said openings 2O 1n proper relation. Each of said -plugs. has a'shortlaterally-directed wing or tenon 22 formed on the end of the stem thereof whereby it is retained agalnstchance dislodgment when inserted in an opening 20, and each opening 20 has a laterally directed slot 20" communicating therewith through which said wing is directed. After insertion, the plug is given a partial turn to carry said wing out of register with said slot 20*, as will be readily understood. To produce a long or gradual bend in a pipe, the latter is inserted between the head-piece 11 and the wheel 6 and between the wheel 17 and said wheel 6; and said head-piece is adjusted into binding relation to said pipe, the latter having been first disposed so that the point gripped by the head-piece is the point from which the bend shall begin. The lever 16 is then drawn downward, causing the parts to assume substantiallv the positions indicated in dotted lines in Fig. 1, and this action carries the pipe to substantially the position indicated by dotted lines in said figure, the same being bent over the periph cry of the wheel 6. As is obvious, the wheel 6 may be preliminarily rotated to any preferred position; then, after producing a bend which utilizes the limit of the throw of the lever 16, said wheel may be rotated forward a suitable distance and the lever again depressed for producing a bend of still greater length.

Nhile the pawl and ratchet connection hereinbefore described will ordinarily suflice for holding the wheel 6 in any position to which it may be rotated, we may additionally employ a pin or key 23, the same being directed through a hole 24: in the frame and into one of a plurality of holes 25 provided in said wheel 6, as is most clearly shown in Fig. 5. i

All of the parts mounted on the shaft 5 may be swung to the position shown in dotted lines in Fig. 2, as when the coiiperation of the head-piece 11 is not required and the bending is to be performed over the plugs by hand.

What is claimed is 1. A pipe bending apparatus comprising a support, a wheel rotatably mounted on said support, a ratchet in fixed relation to said wheel, a pawl normally engaging said ratchet, means for clamping a pipe against the periphery of said wheel, and means mounted on the axis of said wheel and adapted for movement adjacent to the periphery of the latter whereby the 'pipe is bent about said periphery.

2. A pipe bending apparatus comprising a support, a wheel rotatably mounted on said support, means for clamping a pipe against the periphery of said wheel, a ratchet in fixed relation to said wheel, a pawl normally engaging said ratchet, and a lever-operated wheel adapted to be rotated adjacent to the periphery of the firstmentioned Wheel for bending the pipe about the latter.

3. A pipe bending apparatus comprising a support, a wheel rotatably mounted on said support, a ratchet in fixed relation to said wheel, a pawl normally engaging said ratchet, a yoke having pivotal relation to the axis of said wheel, a wheel rotatably mounted in said yoke and located in opposing relation to and at a spaced distance from the periphery of the first mentioned wheel, means for clamping a pipe against the periphery of said first mentioned wheel, and means for swinging said yoke downward for bending over said periphery a pipe secured by said clamping means and interposed between said wheels.

l. A pipe bending apparatus comprising a support, a wheel rotatably mounted on said support, a ratchet in fixed relation to said wheel, a pawl normally engaging said ratchet, a yoke having a pivotal relation to the axis of said wheel, a wheel rotatably mounted in said yoke and located in opposing relation to and at a spaced distance from the periphery of the first mentioned wheel, a bearing block carried by said first-mentioned wheel, a head-piece mounted over said bearing block, means for adjusting said head-piece for clamping a pipe against the periphery of said first mentioned wheel, and means for swinging the yoke downward for bending a pipe interposed between said wheels and secured by the clamping mecha nism.

5. A pipe bending apparatus comprising a support, a wheel rotatably mounted on said support, a ratchet in fixed relation to said wheel, a pawl normally engaging said ratchet, a yoke having a pivotal relation to the axis of said wheel, a wheel rotatably mounted in said yoke and located in opposing relation to and at a spaced distance from the periphery of the first mentioned wheel, a bearing block carried by said first-mentioned wheel, an adjusting screw mounted in said bearing block,.a head-piece disposed in overlying relation to the first-mentioned wheel and mounted in swiveled relation to said adjusting screw, said block being adapted to clamp a pipe interposed between said wheels in rigid relation to the first mentioned wheel, and hand operated means for lowering the yoke-carried wheel for bending the pipe over the periphery of the first mentioned wheel. I

In testimony whereof we afiix our signatures in presence of twowitnesses.

RAY L. DAVIS. GUY C. MOYERS. WVitnesses:

H. E. DUNLAP, W. F. KEEFER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. ,0. I 

